US3624209A

US3624209A - Composition for treatment of gastro-intestinal disorders

Info

Publication number: US3624209A
Application number: US605231A
Authority: US
Inventors: Edmund S Granatek; Alphonse P Granatek
Original assignee: Bristol Myers Co
Current assignee: Bristol Myers Co
Priority date: 1966-12-28
Filing date: 1966-12-28
Publication date: 1971-11-30
Anticipated expiration: 1988-11-30

Abstract

A pharmaceutical composition useful for the treatment of gastrointestinal disorders comprising a diethylaminoethyl cross-linked dextran anion exchanger and a pharmaceutical carrier or another therapeutic agent and a method of treating gastro-intestinal disorders in mammals by the oral administration of such a composition.

Description

United States Patent Inventors Edmund S. Granatek;

Alphonse P. Granatek, both 01 Baldwlnsville, N.Y.

Appl. No. 605,231

Filed Dec. 28, 1966 Patented Nov. 30, 1971 v Assignee Bristol-Myers Company New York, N.Y.

COMPOSITION FOR TREATMENT OF CASTRO- [56] References Cited UNITED STATES PATENTS 2,554,072 5/1951 Sullivan et al. 424/79 2,581,035 ll1952 Martin et a1. 424/79 3,002,823 10/1961 Flodin et al. 23/293 3,042,667 7/1962 Flodin et al 260/209 3,107,203 10/1963 Baumgarten et al. 195/66 3,364,111 1/1968 Morii et al. 167/55 Primary Examiner-Albert T. Meyers Assistant Examiner-Daren M. Stephens Attorneys-Curtis W. Carlton, Richard H. Brink, Robert B.

Simonton and Herbert W. Taylor, Jr.

ABSTRACT: A pharmaceutical composition useful for the treatment of gastro-intestinal disorders comprising a diethylaminoethyl cross-linked dextran anion exchanger and a pharmaceutical carrier or another therapeutic agent and a method of treating gastro-intestinal disorders in mammals by the oral administration of such a composition.

COMPOSITION FOR TREATMENT OF CASTRO- INTESTINAL DISORDERS lt is known that pepsin contributes substantially to ulcer formation in the gastro-intestinal tract of mammals. Therefore, an important part of ulcer therapy is to reduce the amount of pepsin in the stomach. Heretofore only a limited number of pepsin inhibitors were known. Therefore, an object of the present invention is to provide a pharmaceutical composition useful for the treatment of ulcers of the gastro-intestinal tract. Another object of this invention is to provide a method of treating ulcers of the gastro-intestinal tract in mammals.

These and other objects which will become apparent as this specification proceeds are accomplished by the provision according to the present invention of a pharmaceutical composition comprising a diethylaminoethyl cross-linked dextran anion exhanger and a pharmaceutical carrier.

The diethylaminoethyl cross-linked dextran anion exchanger used in the compositions of this invention is marketed by Pharmacia Uppsula, Sweden, under the trade name DEAE-Sephadex. The anion exchanger is a weakly basic anion exchanger and is the diethylaminoethyl derivative of a polymer produced from dextran by cross-linking the linear polysaccharide chains to a threedimensional network, which acts as a molecular sieve. The polymer is also marketed by Pharmacia Uppsula, Sweden, under the trade name Sephadex. In the diethylaminoethyl derivative, the diethylaminoethyl groups are attached at random by ether linkages to the glucose residues constituting the polysaccharide chains. The diethylaminoethyl cross-linked dextran anion exchanger employed in the compositions of this invention is fully described by B. Spross et al., Acla Pharmaceutica Suecica Vol. 2, No. l, p. 1 (Feb. 1965).

Quite unexpectedly, it was discovered that diethylaminoethyl cross-linked dextran anion exchanger has antipepsin activity. The anion exchanger in effect neutralizes the effect of pepsin, making it useful for the treatment of ulcers in mammals, when administered in an effective amount.

The compositions of this invention comprise not more than about 200 mgJkg. per dosage unit and preferably from about I to about 200 mg./kg. of diethylaminoethyl cross-linked dextran anion exchanger together with a suitable carrier. The carrier may be either a solid or liquid and the compositions can be in the form of tablets, capsules, powders, granules or suspensions. The compositions can contain suitable preservatives, coloring and flavoring agents. Some examples ofthe carriers which can be used in the preparation of the compositions of this invention are gelatin capsules, sugars, cellulose derivatives such as sodium carboxy-methylcellulose, gelatin, talc, magnesium stearate, vegetable oil, such as peanut oil, etc., liquid petroleum, glycerin, sorbitol, ethanol, agar and water. The carrier may serve as a binder and the composition may be tabletted. If the carrier is a gelatin capsule, the diethylaminoethyl cross-linked dextran anion exchanger may be encapsulated into the gelatin capsule by conventional means. If a liquid carrier is used, the composition may be in the form ofa suspension.

The compositions of the present invention may also contain other therapeutic agents, e.g., antacids, antispasmodics, anticholinergics and the like. Representative of the antacids are aluminum hydroxide, magnesium hydroxide, aluminum glycinate, calcium carbonate, complexes as described in U.S. Pat. No. 3,200,136 and the like.

Administration of the compositions of this invention to mammals orally in an effective amount is a useful method of treating gastro-intestinal ulcers.

The following examples are intended to illustrate the inven tion claimed herein without unduly restricting it.

EXAMPLE 1 This example demonstrates the antipepsin activity of the diethylaminoethyl cross-linked anion exchanger. The following experiments were carried out.

1. Five grams of gelatin was dissolved in 50 ml. of water, held at 37 C. for 1 hour and then allowed to stand overnight at ambient temperature. Result: The system set up to a stiff gel.

2. The above l repeated with 1 gram of DEAE-Sephadex A-25 added. Result: The system set up to a stifi gel.

3. The above, (I), was repeated with 1 gram of pepsin added. Result: The system remained fluid with no gel formation.

4. The above, l was repeated with 1 gram of pepsin plus l gram of DEAE-Sephadex A-25 added. Result: The system set up to a stiff gel.

From a comparison of the results of the foregoing experiments, it can be concluded that the diethylaminoethyl crosslinked anion exchanger inhibits peptic activity.

EXAMPLE 2 Two hundred grams of finely powdered DEAE-Sephadex A-25 are mixed with 200 grams of dried starch. The mixture is tested according to the procedure described in example 1 and is found to exhibit antipeptic activity.

EXAMPLE 3 Two hundred grams of finely powdered DEAE-Sephadex A-25 are mixed with grams dried finely powdered aluminum hydroxide and 100 grams of dried starch. The mixture is tested according to the procedure described in example I and is found to exhibit antipeptic activity.

EXAMPLE 4 Ingredients Amounts per tablet, mg.

DEAE-Sephadex A-25 Lactose, powdered Sucrose, powdered Talc Magnesium stcarate The DEAE-Sephadex, lactose and sucrose are mixed and screened through a 60-mesh U.S. standard screen. The screened mixture is then granulated with an alcoholic ethyl cellulose solution and the wetted mass is screened through an 8-mesh U.S. standard screen. The granules are dried and passed through a lZ-mesli screen. These granules are then mixed with the tale, magnesium stearate, peppermint and spearmint and compressed into tablets.

Two or more tablets are administered once a day.

EXAMPLE 5 Antacid Suspension Manufacturing Instructions l. Assemble all equipment to be used in the production of EXAMPLE 7 the product. Clean and sterilize the equipment. Include all hoses, filters, scoops, etc., as well as the tanks and larger pieces of equipment. The manufacturing area Ingredients m n should be swabbed with -percent phenol solution. All 5 personnel in the area should wear sterile caps, gowns, DEAE-SeiJhadn A45 1 1. masks d gloves Sodium saccharin 0.025 gm. D-sorbitol 2.000 gm. 2. To a clean (not sterile) tank, add 60 percent of the final Mcmylpmbcn (25 gm. bath volume of Purified Water U.S.P. Propylaparaben 0.02s gm. 3. With agitation add the sodium hydroxide, methylparaben 1O Svdivm melahisulphile 0,100 s Oil of Peppermint 0.0) gm.

nd r ra n aninupeopylpa be to the batching tank Mix for Purified Wm usyuqs 00000 ml.

4. With continued agitation add the saccharin sodium, sodium cydamate and magneslum gluconme' Commue agna' 15 The parabens are dissolved in IS ml. of hot water and to this for mnjutes or a clear Sohmon r.esults' added the sorbitol, saccharin and sodium metabisulphite the solimon from step 4 through a which had previously been dissolved in 20 ml. of water. The equipped with E0 pads. Collect the filtrate in a sterile DEABsephadex is added to the above solution and batching tank Reta!" the i filter so that u may be thoroughly mixed. The oil of peppermint is then added and the used to prepare filtered purified water U.S.P. as called for 20 preparation is brought up to volume with purified water.

in Subsequemsteps' T t bl f l ad in ter dfo rtimes dail 6. To the filtered solution from step 5, add the sterile we a espoons u are m ls e u y.

dimethylpolysiloxane mixture, the aluminum hydroxide EXAMPLE 8 gel, DEAE-Sephadex and the magnesium hydroxide paste with rapid agitation. Containers may be rinsed with filtered purified water U.S.P. equivalent to 4 percent of the total batch volume.

Aluminum Hydroxide-Magnesium Hydroxide Antacid Sus ension Use sterile utensils for the transfer. Maintain agitation until P a smooth, uniform dispersion has been obtained. Formula: Per um 7. Pass the suspension througha sterile 6-inch or 8-inch Premier mill. Adjust the tank p.s.i. with air pressure (sterile) DEAESePhadeX A45 400000 gm or with nitrogen to maintain 5 p.s.i. on the mill head. Ad- Methyl Paraben. U.S.P.. micmnized 0.700 1", just the clearance of the rotor to 0.010 on the 8-inch mill Z'ZP z ij g l gm- O lUm ICC arm. or 0.006 on the 6-mch mill. Temperature of the milled Sodium sucaryl HM gm suspension should not exceed 86 F. (30 C.). Begin cool- Aluminum O ide as Aluminum Hydroxide ing of the sterile receiving tank as the milling starts. We! TA Baku Chcmiwl P Y- 8. Rinse the batching tank with a volume of filtered purified W' gm Magnesium Hydroxide as Merck water U.S.P. equal to 8 percent of the final batch volume Hydmmugnu MM [ml/3,4 4M0 8m and add to the batch. Magnesium Gluconate l0.00 gms. 9. Add the oil of peppermint to the batch and agitate for l5 40 cuthllxymflhyl Ccllulvss 125 gm minues Oil of Pep ermint, U.S.P. (H0 ml.

. Purified Water. U.S.P. qs I.()U0.Ul) ml. l0. Agltate the batch under vacuum for 20 minutes. Release with nitrogen or filtered air. I 1. Check final volume and if necessary add sufficient fil- Manufacturing Instructions tered purified water U.S.P. to the batch to bring it up to L To 400 mL of purified water add the methyl ig i g I f 20 th 1 paraben, propyl paraben, sodium saccharin, sodium sucaryl gi ate un er vacuum or minutes en re ease W1 and magnesium gluconam nitrogen or filtered air and hold for filling. Take final samwith mild agitation heat to 700 and hold a this ples' perature until solution is obtained.

l3. Transfer product to filling line using nitrogen or filtered 3 Cool to C using cooling water in the tank jacket and air. Pass the product through a 40-mesh screen on the to 400 ml. 'Iith Purified water U51 "1 to the finmg Befor? i the tank be 4. Pass the solution through a sterile Ertel filter equipped agitated for 30 'f AglPauon Should commlfed with E0 pads and collect into a sterile batching tank. throughout the filling operation. Do not agitate at high 55 5. Pass an additional quantity of purified water USP. speed through the filter sufficient to collect 300 ml. of filtrate and place in a sterile holding tank. EXAMPLE 6 6. Swab the exterior of the drums containing the wet gels with 5 percent W/V phenol solution.

mediums Amoumspenabmmg 7. To the filtered solution in the batching tank (step 4),

slowly add the DEAE-Sephadex aluminum hydroxide and DEABSCPMMX A45 50M magnesium hydroxide gels with rap d agitation. tJse sterile utensils for this transfer. Maintain agitation until a Magnesium stearate 2.5 smooth, uniform dispersion has been obtained.

8. Remove 200 ml. of the filtered water from the holding tank (step 5) and dissolve the carboxymethyl cellulose in The DEAE-Sephadex and half the amount of starch are it with rapid agitation in asterile vessel. mixed and screened through a 60-mesh U.S. standard screen. 9. With agitation, slowly add the carboxymethyl cellulose The screened mixture is then granulated with an alcoholic solution to the suspension from step 7. Up to 20 ml. of the ethyl cellulose solution and the wetted mass screened through filtered water left in the holding tank may be used for an 8-mesh U.S. standard screen. The granules are dried and rinsing, continue to mix rapidly until uniformly dispersed. passed through a l2-mesh screen. These granules are then 10. Pass the suspension through a sterile Eppenbach mixed with the remaining starch and magnesium stearate and micromill with the micrometer set at 2(0.002-inch compressed into tablets. clearance) and the Rheostat set at 100. Cooling water One tablet is administered twice a day. must be used in the jacket of the mill.

l l. Deaerate using the Spray Nozzle" process. Up to 60 ml. of the filtered water remaining in the holding tank (step 5) may be used for rinsing.

12. Add the oil of peppermint and sufficient filtered water from the holding tank (step 5) to bring the batch up to 5 final volume.

13. Agitate at a moderate speed for minutes being careful not to incorporate air into the suspension.

EXAMPLE 9 l0 Chewable Antacid Tablet Manufacturing lnstructions for 1,000 Tablets 1. Prepare 266.0 grams of 5 percent (w/w) starch paste by heating 13.3 grams of corn starch dispersed in 252.7 ml. of purified water, U.S.P., to boiling. Sufficient agitation should be used during this step to avoid scorching. Remove heat and maintain agitation until cooled to 25 C. Add sufficient purified water, U.S.P., to bring the weight up to 266.0 grams and mix to obtain a homogenous paste. 2. Place the DEAE-Sephadex, aluminum hydroxide, magnesium hydroxide, mannitol, urea, sodium sucaryl and sodium saccharin in a pony pan and blend at slow speed for 15 minutes.

. Pass the blend through a Fitzmill at high speed with impact forward using a MOO screen.

4. Return the milled material to the pony pan and continue mixing for one-half hour.

. With agitation remaining at low speed, rapidly add all of the starch paste from step 1 and mix until a uniform dispersion is obtained. The mix appears dry at this point but usually contains enough moisture to form the granulation. if necessary, additional water may be added to facilitate the formation of the strands of granulation described in the next step.

6. Pass the mix through a Stokes oscillator, with funnel removed, using a 6-mesh stainless steel screen and collect directly on drying trays. If strands of granulation are not being formed, additional water must be added to the mix.

7. Spread the granulation evenly on the trays and dry in a Stokes oven at 38 C. until the moisture content is 4.5 to 5.5 percent.

8. Mill using a combination of screen, speed, and blade adjustment which will produce the greatest yield of 30- to 5 60-mesh granules.

9. Separate the granules retained on a 60-mesh screen, add

5.48 percent magnesium stearate and hold.

10. To the fines passing through a 60-mesh screen add 5.48

percent magnesium stearate and blend thoroughly.

l l. Slug at a weight of 0.470 grams using one-half inch, flat punches to a hardness of 5 to 7 kg. Reduce the slugs to 30- to 60-mesh granules and repeat the process until not more than 15 percent nor less than 10 percent of fines passing through a 60-mesh screen remain.

LII

l2. Combine the lubricated granules from step 9 with the granules and fines from step 1 I. Add the flavors and blend thoroughly for 30 minutes.

13. Tablet using five-eighth inch, fiat, beveled edge punches to a hardness of 1 1 kg. or one-half inch square, concave punches to a hardness of 9 to 10 kg. (Strong-Cobb-Arner Tester).

EXAMPLE l0 Chewable Tablets with Antiflatulant Formula: Per Table! DEAE-Sephadex A-ZS 0.5000 gms. Aluminum Hydroxide Gel, Dried, U.S.P. 0.3120 gm. Magnesium Hydroxide, N.F. 0.0936 gm. Mannitol, N.F. 0.30M gm. Urea, N.F. 0.0600 gm. Sodium Cyclamate, N.F. 0.0200 gm. Sodium Saccharin, U.S.P. 0.0020 gm. Corn Starch, U.S.P. 0.0160 gm. Polyvinylpyrrolidone 0.0080 gm. Flavors 0.0!30 gm. Magnesium Stearate, U.S.P. 0.0340 gm. Dimethylpolysiloxane 0.0200 gm. Silicone Dioxide (fine powder) 0.0l25 gm.

Total Weight [.3925 gms.

Manufacturing lnstructions l. Dissolve the dimethylpolysiloxane in methylene chloride using 2 ml. of methylene chloride for each gram of medical fluid.

2. With agitation, add the solution from step I to the silicone dioxide in a pony pan. Mix until uniformly dispersed.

3. Dry until free of methylene chloride. 4. Pass the mannitol, urea and dried silicone dioxide from step 3 through a Fitzmill equipped with a OO-screen, impact forward, high speed.

5. Place the milled material from step 4 in a blender with the aluminum hydroxide, magnesium hydroxide, sodium cyclamate and sodium saccharin. Blend for 30 minutes.

6. a. With agitation, dissolve the PVP in about two-thirds of the purified water U.S.P. required to make the paste.

(Amount of purified water U.S.P. for paste should be 20 ml. per gram of corn starch).

b. Heat the PVP solution to boiling.

c. Disperse the corn starch in the remaining one-third of the water.

d. Add the starch-water dispersion to the hot PVP solution with mixing. Continue to mix and heat until a translucent gel results.

7. With agitation at low speed, add the starch paste to the powder blend in a pony pan. Mix well to form a uniform wet granulation. If necessary, this step may be carried out in two or more pan loads.

8. Spread the granulation evenly on trays, breaking up the large lumps by hand, and dry at F. (38 C.) for l0 hours. NOTE: Moisture content of the dried granules must be from 4.5 to 5.5 percent. Extreme caution must be taken no! 10 overdry this granulation.

9. Pass the dried granules through a Fitzmill equipped with a Example I l Antacid Chewable Soft Gelatin Capsules Formula: Per Capsule DEAE-Sephadex A-25 0.250 gm. Soluble Buffer Antacid.

micropulverized 0.425 gm. Aluminum Hydroxide-Magnesium Carbonate, micropulverized Codried Gel.

FMA-I I Powder. Reheis 0.425 gm. Magnesium Trisilicate Powder 0100 gm. Soy Bean Oil Refined 0.480 gm. mixture used Lecithin. Soya 0.0l5 gm. to q.s. Sodium Lauryl Sulfate U.S.P. 0.0075 gm. Mannitol N.F..

mieropulverized 0. I gm. Urea. micropulvcrized 0.080 gm. Sodium Cyclamate N.F..

micropulverized 0.0768 gm. Sodium Saccharin N.F.. 0.00768 gm. Peppermint Natural Flavor. Powder 0.006 gm. Preparation of Soluble Buffer Antacid: Per I20 ml. Gluconic Acid. Technical 50% Grade Sufficient Aluminum Hydroxide Magnesium Hydroxide NF. Powder 5.60l grams Manufacturing Instructions for Soluble Buffer Antacid I. To a sterilized tank. add 16 liters of deionized water and the gluconic acid.

2. With agitation, heat the mixture to 80 C.

3. With continued agitation, slowly add the magnesium hydroxide. (Fast addition will result in frothing.)

4. With continued agitation, slowly add the aluminum hydroxide.

5. Maintain agitation and temperature at 90l00 C. for l hour. At this point. the solution is light yellow in color and slightly hazy in appearance. Check pH. (Should be greater than 7.6)spray dry. evaporate to dryness or lyophilize.

Manufacturing Instructions for Antacid Chewable Soft Gelatin Capsules I. With agitation in a suitable container dissolve the lecithin in the soy bean oil.

2. With agitation incorporate the sodium lauryl sulfate.

3. With agitation incorporate all the ingredients.

4. Pass the suspension through a premier mill.

5. Deaerate. 6. Fill into the smallest size capsules possible. using a soft gelatin encapsulating machine.

Example 12 Antacid Chewable Soft Gelatin Capsules Formula: Per Capsule DEAE-Sephadex A-25 0.40 gm. Soluble Buffer Antacid micmnized L79 gms. Soy Bean Oil Refined 0.480 gram mixture used Lecithin. Soya 0.0 l 5 gram to q.s. Sodium Lauryl Sulfate U.S.P. 0.0075 gm. Mannitol N.F.. micropulverized 0. I00 gm. Urea. micropulverized 0.080 gm. Sodium Cyclamate N.F..

micropulverized 0.768 gm. Sodium Saccharin N.F. 0.00768 gm. Peppermint Natural Flavor, Powder 0.006 gm.

Manufacturing Instructions I. With agitation in a suitable container dissolve the lecithin in the soy bean oil.

2. With agitation incorporate the sodium lauryl sulfate.

3. With agitation incorporate all the ingredients.

4. Pass the suspension through a premier mill.

5. Deaerate.

6. Fill into the smallest size capsules possible. using a soft gelatin encapsulating machine.

While this invention has been described in terms of its preferred embodiment, those skilled in the art will appreciate that modifications can be made.

What is claimed is:

l. A pharmaceutical composition for the treatment of gastro-intestinal disorders comprising a diethylaminoethyl crosslinked anion exchanger and an antacid selected from the group consisting of aluminum hydroxide, magnesium hydroxide, aluminum glycinate and calcium carbonate.

2. A pharmaceutical composition for treatment of gastro-intestinal disorders according to claim 1, wherein said antacid is aluminum hydroxide.

3. A pharmaceutical composition for treatment of gastro-intestinal disorders according to claim 1. wherein said antacid is magnesium hydroxide.

4. The pharmaceutical composition for treatment of gastrointestinal disorders of claim I in unit dosage form for oral administration.

5. The pharmaceutical composition for treatment of gastrointestinal disorders of claim 1 in the form of a dosage unit tablet.

6. The method of treating gastro-intestinal ulcers in mammals which comprises orally administering an effective amount of a composition comprising diethylaminoethyl crosslinked dextran anion exchanger and an antacid selected from the group consisting of aluminum hydroxide, magnesium hydroxide, aluminum glycinate and calcium carbonate.

7. The method of claim 6 wherein said antacid is aluminum hydroxide.

Claims

2. A pharmaceutical composition for treatment of gastro-intestinal disorders according to claim 1, wherein said antacid is aluminum hydroxide.
3. A pharmaceutical composition for treatment of gastro-intestinal disorders according to claim 1, wherein said antacid is magnesium hydroxide.
4. The pharmaceutical composition for treatment of gastro-intestinal disorders of claim 1 in unit dosage form for oral administration.
5. The pharmaceutical composition for treatment of gastro-intestinal disorders of claim 1 in the form of a dosage unit tablet.
6. The method of treating gastro-intestinal ulcers in mammals which comprises orally administering an effective amount of a composition comprising diethylaminoethyl cross-linked dextran anion exchanger and an antacid selected from the group consisting of aluminum hydroxide, magnesium hydroxide, aluminum glycinate and calcium carbonate.
7. The method of claim 6 wherein said antacid is aluminum hydroxide.